ASTROSAT CZTI

Data Quality Report

Orbit 37482

Creation date: 2024-06-27T21:40:35.869403
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C07_001T11_9000005326_37482cztM0_level2.evt modeM0/AS1C07_001T11_9000005326_37482cztM0_level2_quad_clean.evt
Size (bytes)549,437,760103,775,040
Size524.0 MB 99.0 MB
Events in quadrant A3,003,512714,090
Events in quadrant B3,526,337710,836
Events in quadrant C3,022,022703,861
Events in quadrant D6,689,577603,048

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124603
B0143862
C0126772
D0239472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5872180.306540%
B58722233.797684%
C5872570.970708%
D5872122720.895777%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7215 5873 11 11 0.15% 0.19%
B 7215 5873 188 188 2.61% 3.20%
C 7215 5873 45 45 0.62% 0.77%
D 7215 5873 1182 1182 16.38% 20.13%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 309183 2334.28 650 638 132.2
A 13 248 46299 345.45 650 638 132.2
A 15 222 44430 331.31 650 638 132.2
B 5 172 656381 5382.31 637 620 121.8
B 15 35 237267 1942.34 637 620 121.8
B 0 229 46981 380.52 637 620 121.8
C 14 254 270108 1830.08 628 632 147.2
C 15 214 251360 1702.76 628 632 147.2
C 0 10 42127 281.8 628 632 147.2
D 12 227 1896451 13421.88 576 559 141.3
D 13 249 1346672 9529.74 576 559 141.3
D 2 249 559732 3958.64 576 559 141.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter